the individual who wishes to have an answer to the problem of evil, as it is posed today, has need, first and foremost, of self-knowledge, that is, the utmost possible knowledge of his own wholeness.
Jung argues that self-knowledge — encompassing one’s capacity for both good and evil — is the primary ethical and psychological necessity for confronting the problem of evil in the modern world.
, Memories, Dreams, Reflections, 1963thesis